Modbus Communication Examples; Modbus Master Simulator Modbus Poll - Pepperl+Fuchs INX DH-F199-B30 Series Manual

INX***DH-F199-B30-***,INY***DH-F199-B30-***

MODBUS Communication Examples

5 MODBUS Communication Examples
5.1

Modbus Master Simulator Modbus Poll

In the following chapters, the MODBUS master simulator "Modbus Poll" of "Witte Software
Company" is used to display the command sequences and to establish MODBUS
communication.
"Modbus Poll" is a popular MODBUS simulator for testing and debugging slave devices. The
software supports MODBUS RTU/ASCII and MODBUS TCP/IP.
For detailed information, see the "Witte Software Company" web page:
http://www.modbustools.com/index.html
Note!
The MODBUS address of the INX***DH-F199-B30-*** and INY***DH-F199-B30-*** series
sensors is 127d (7Fh).
Modbus Poll
To have a general description of the command creation, the so-called "Test Center" of the
MODBUS master simulator is used. With this, the individual parameters and any function
codes can be freely entered as a hexadecimal byte sequence.
Setup of Modbus Poll for slave communication
1. Start Modbus Poll.
2. Check if communication parameters are correct for your device. Click the "Connect..."
command in the "Connection" menu.
Figure 5.1
18